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PC wont post

Lamb

Well-known member
Joined
Dec 19, 2008
Messages
801
Location
Montreal, QC
Hey guys,

Yesterday I received all the part for my parent's PC;

Xigmatek MIDGARD
Gigabyte GA-MA785GM-US2H
AMD Athlon II X2 240
Western Digital Green 500GB
Corsair XMS2 PC2-6400 4GB
BFG GS-550
Liteon IHAS124
Window 7 Home Premium OEM

Built the PC and when I come to power it...no post, and the PC shut down after like 5 seconds.

So after some testing I decide to remove everything from the case to make sure there's no shortcut created between the board and the case, still nothing (at that moment there's just the CPU + heatsink plugged onto the motherboard) so I decide to add the troubleshooting speaker that comes with the motherboard, power the PC, and all I can hear are continuous short beeps, which means, from Gigabyte guide, that there is a power error.

I decide to bring out my holy grail of power (PCP&C Silencer 750W :bleh:) to see if the problem was the PSU, power up the PC...one short beep happens, which should mean that the PC booted successfully, yet it shutdown again very quickly....so should I be looking at the motherboard I received as a lemon?
 

stoanee

Well-known member
Joined
Jun 4, 2007
Messages
3,225
Location
Lacombe Alberta
Sounds like you are going to have troubleshoot one component at a time. I always suspect ram first because it can cause "unfathomable problems" and is easy to swap out to check it.

EDIT...DOH.... just noticed you have only mobo & cpu hooked up..:doh:

Here is a flow chart to help isolate the problem:

View attachment 8280

Ooops! Wrong one! :whistle:

Here is another one, a little dated maybe but still handy. You can find more charts here:
Motherboard Troubleshooting - Memory and RAM diagnostics, CPU troubleshooting and Heat Sink

View attachment 8281
 
Last edited:

gingerbee

Well-known member
Joined
Jan 22, 2009
Messages
7,114
Location
Orillia, Ontario
you could try putting some ram in and see if it boots ( i hope you forgot it or at least forgot to mention that you have ram installed )
or it's doh :doh:
 

Lamb

Well-known member
Joined
Dec 19, 2008
Messages
801
Location
Montreal, QC
I did try with ram installed (both or single stick (tried each sticks)) yet still nothing happens. I just tried to plug everything togheter again;

- Fans are working
- HDD boot
- DVD boot

- Troubleshooting speaker won't make any sound anymore...
- If the heatsink is plugged into the ''CPU_FAN'' header, it won't start
- No post

**Note: I use the onboard GPU...it may be the issue (so that's a bad mobo anyways)

Looking at your chart Stoanee, looks like a bad mobo to me :(
 

CMetaphor

Quadfather
Joined
May 5, 2007
Messages
5,081
Location
Montreal, Canada
I did try with ram installed (both or single stick (tried each sticks)) yet still nothing happens. I just tried to plug everything togheter again;

- Fans are working
- HDD boot
- DVD boot

- Troubleshooting speaker won't make any sound anymore...
- If the heatsink is plugged into the ''CPU_FAN'' header, it won't start

Looking at your chart, looks like a bad mobo to me :(
Id say pull the power from the board, pull the CMOS battery, then short the power_on header for several seconds. This should do a hard bios reset. Try it again afterward.
 

stoanee

Well-known member
Joined
Jun 4, 2007
Messages
3,225
Location
Lacombe Alberta
Id say pull the power from the board, pull the CMOS battery, then short the power_on header for several seconds. This should do a hard bios reset. Try it again afterward.


Never heard of that before, I learned something today...:thumb:
 

krazyups

Well-known member
Joined
Mar 6, 2008
Messages
279
Location
McGregor, Ontario
I did try with ram installed (both or single stick (tried each sticks)) yet still nothing happens. I just tried to plug everything togheter again;

- Fans are working
- HDD boot
- DVD boot

- Troubleshooting speaker won't make any sound anymore...
- If the heatsink is plugged into the ''CPU_FAN'' header, it won't start
- No post

**Note: I use the onboard GPU...it may be the issue (so that's a bad mobo anyways)

Looking at your chart Stoanee, looks like a bad mobo to me :(
My dad had this problem with a LGA775 mobo from Gigabyte, all he did was use another fan header, since everything else worked just fine (maybe not the best, but it was for a computer at work and it would have been a huge PITA to RMA it).

If it starts for a few seconds and shuts down, it could be a stuck power switch on your case ... just my .02.

-Steve
 

Lamb

Well-known member
Joined
Dec 19, 2008
Messages
801
Location
Montreal, QC
So I found the problem and would like to smash my head against the wall...

That was the first AMD system I ever built, so I'm really only used to build Intel systems and you know when you want to put the CPU, you have to remove the socket shield (that's the same with all Intel motherboards) so I thought it was the same with AMD ones....nope :shok:I did remove some sort of shield on the socket...but it's not like on Intel mobo's...it's an actual part of the socket, just have to put the damn CPU on it...oh well...

Where's my noob award? :haha:

Here it is!


The PC post now and should work like a charm in ~15 minutes.
 

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